Apparatus for desiccating milk.



No. 841,153. PATENTED JAN. 15, 1907.

J. A. JUST.

APPARATUS FOR DESIGOATING MILK.

APPLICATION FILED JULYll, 1 905.

At st: Inventor: A .3 J N I051 g 7 Attys *r rn Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed July 11, 1906. 7 Serial No. 269,165.

To all whom it may concern:

Be it known that I, JOHN A. J Us'r, a citizen of the United States, and a resident of Pulaski, New York, have invented certain new and useful Im rovements in Afp aratus for Desiccating k, of which the ollowing is a specification accompanied by a claim.

, This invention relates to apparatus for desiccating milk, and has for its object to reduce the milk to powder in a simple and efficient manner.

In carrying out the invention the milk is injected into a heated atmos here in a finel divided condition or in a higIi state of sub ivision, and the powder which is formed is suitably withdrawn from the chamber by a current induced by suitable apparatus.

Further objects of the invention will hereinafter appear; and to these ends the invention consists of a means for carrying out the above ob'ects illustrated by a suitable drawing, in w ich the figure is a vertical sectional view of apparatus suitable for carrying out the process.

In accordance with this invention the milk is preferably sprayed into the heated atmosphere in such form as to present the greatest surface possible to the action of the heated air, and the incoming heated air is also introduced into the chamber in such manner as to 13171: the maximum efiect upon the stream of I prefer to inject the milk into the chamber A from a suitable nozzle B or from nozzles which direct the streams of milk outwardly in all directions over an area substantially covering the base 0 of the chamber. I have found that good results are produced by injecting the stream of milk 1n substantially the form of a widely-diverging conical stream, as illustrated in the drawing, which gradually widens as it leaves the nozzle B, thereby presenting a constantly-increasing cross-sectional area. The heated incoming air is also injected from the nozzle D in a graduallywidening stream or in conical formhaving a greater angle of divergence than the stream of milk.

at E and. are thus directed inwardly again, thereby again intersecting the streams of milk and increasing the action of the chamber A.

The hot air containing the water vapor extracted from the milk rises up throughthe top of the chamber A and is carried off in a longitudinal direction through one 0'! more suitable condensers F, which are preferably provided with supports G for a suitable hygroscopic substance. The water of condensation is collected from the shelves and led to suitable receivers H.

In order to remove the powdered milk from the heated chamber'A, outlets I are provided in the chamber-walls at the point where the desiccation is substantiallycomplete, which is at a height adjacent the plane of maximum action just above the oints E on the sides of the chamber at w 'ch the streams of air impinge. The falling powder is thus withdrawn in a transverse direction from the center toward the sides of the chamher by blowers I without permitting it to fall to the bottom of the chamber, and the rising currents of air pass inwardly into the hollow central portion of the stream of milk and then upwardly and outwardly thro h the upper portion of the stream of milk to tIie condensers F, leaving the water-vapors.be-

hind and escaping at the top of the condensers, where suitable fans J may be" provided to carry oii the air and aid in producing a draft.

The condensers F may be of any suitable character and need not be provided with h groscolpical substance. Preferably also t e tank containing the milk is placed under pressure, as by means of compressed air, to

orce the milk through the injecting-nozzle B. The temperature of the air should be from about 300 to about 450 Fahrenheit and may be regulated according to the quantity injected. The heated chamber A should be provided with heat-insulating material ofany suitable character, and the air may be ner.

I claimfand desire to obtain by Letters Patent, the following:

In apparatus for 'desiccating milk, the comheated or superheated in any suitable maning cross-sectional area, means for introducing the heated air and water-vapor from one ing into said chamber an oppositely-directed end of the chamber in a longitudinal direcheated-air stream of similar character, said streams thereby intersecting in a lane of tion.

In testimony whereof I have signed this 5 substantially maximum area at w 'ch the specification in the presence of two subscrib- 15 maximum action on the milk occurs, means Ping witnesses.

for withdrawing the milkpowder thusformed fromthe sides of the chamber in a transverse direction at points ad'acent to said plane of to maximum action, an means for withdraw- JOHN A. JUST. Witnesses:

Jnssm F. FARMER, B. E. PARKHURST. 

